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You would have noticed that some people get sick more frequently than others, although living in a similar environment. Do you know why?
Even in the same environment, people with weak immunity get sick more often. Immunity depends on various factors like nutrition, sleep, hygiene, stress levels, age and medical conditions. Those who eat poorly, don’t rest enough or are under stress have less resistance to infections. In contrast, peoRead more
Even in the same environment, people with weak immunity get sick more often. Immunity depends on various factors like nutrition, sleep, hygiene, stress levels, age and medical conditions. Those who eat poorly, don’t rest enough or are under stress have less resistance to infections. In contrast, people with strong immune systems, healthy habits and good hygiene can fight germs better. So, immunity plays a big role in how often we fall ill.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions/class-8/science/
See lessWhat is called immunity?
Immunity means our body’s natural power to fight against diseases. It protects us from harmful germs like bacteria and viruses. When pathogens enter our body, the immune system recognizes them and attacks them. A strong immune system fights diseases quickly. We can improve our immunity by eating heaRead more
Immunity means our body’s natural power to fight against diseases. It protects us from harmful germs like bacteria and viruses. When pathogens enter our body, the immune system recognizes them and attacks them. A strong immune system fights diseases quickly. We can improve our immunity by eating healthy food, staying active, sleeping well and getting vaccinated. Without immunity, our body would easily fall sick and find it harder to recover.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions/class-8/science/
See lessWhat are vaccines?
Vaccines protect us from serious diseases. They are made using weakened or dead parts of germs. When injected into our body, they don’t cause illness but help the immune system learn to fight the real germs later. This process creates acquired immunity. Vaccines are given for diseases like measles,Read more
Vaccines protect us from serious diseases. They are made using weakened or dead parts of germs. When injected into our body, they don’t cause illness but help the immune system learn to fight the real germs later. This process creates acquired immunity. Vaccines are given for diseases like measles, polio and hepatitis. They save millions of lives and stop dangerous diseases from spreading in the community.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions/class-8/science/
See lessWhat do you mean by acquired immunity?
Acquired immunity means the body’s learned defense against a disease. It develops after we recover from an infection or take a vaccine. The immune system creates memory cells that remember the germ. When the same germ attacks again, our body quickly responds and stops it. This helps prevent future iRead more
Acquired immunity means the body’s learned defense against a disease. It develops after we recover from an infection or take a vaccine. The immune system creates memory cells that remember the germ. When the same germ attacks again, our body quickly responds and stops it. This helps prevent future infections or reduces their severity. Vaccines help us gain acquired immunity without falling sick first.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions/class-8/science/
See lessDo you know when the first vaccine was discovered?
The first vaccine was discovered by Edward Jenner in 1796. He noticed that people who had cowpox did not get smallpox. He tested this by giving cowpox to a boy and later exposed him to smallpox. The boy didn’t fall sick. This experiment led to the development of the smallpox vaccine and began the glRead more
The first vaccine was discovered by Edward Jenner in 1796. He noticed that people who had cowpox did not get smallpox. He tested this by giving cowpox to a boy and later exposed him to smallpox. The boy didn’t fall sick. This experiment led to the development of the smallpox vaccine and began the global journey of vaccinations to prevent deadly diseases in humans.
For more NCERT Solutions for Class 8 Science Curiosity Chapter 3 Health: The Ultimate Treasure Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions/class-8/science/
See less